| /* |
| * tegra_rt5640.c - Tegra machine ASoC driver for boards using RT5640 codec. |
| * |
| * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| * |
| * Based on code copyright/by: |
| * |
| * Copyright (C) 2010-2012 - NVIDIA, Inc. |
| * Copyright (C) 2011 The AC100 Kernel Team <ac100@lists.lauchpad.net> |
| * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd. |
| * Copyright 2007 Wolfson Microelectronics PLC. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/slab.h> |
| #include <linux/gpio.h> |
| #include <linux/of_gpio.h> |
| |
| #include <sound/core.h> |
| #include <sound/jack.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| |
| #include "../codecs/rt5640.h" |
| |
| #include "tegra_asoc_utils.h" |
| |
| #define DRV_NAME "tegra-snd-rt5640" |
| |
| struct tegra_rt5640 { |
| struct tegra_asoc_utils_data util_data; |
| int gpio_hp_det; |
| enum of_gpio_flags gpio_hp_det_flags; |
| }; |
| |
| static int tegra_rt5640_asoc_hw_params(struct snd_pcm_substream *substream, |
| struct snd_pcm_hw_params *params) |
| { |
| struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| struct snd_soc_dai *codec_dai = rtd->codec_dai; |
| struct snd_soc_card *card = rtd->card; |
| struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card); |
| int srate, mclk; |
| int err; |
| |
| srate = params_rate(params); |
| mclk = 256 * srate; |
| |
| err = tegra_asoc_utils_set_rate(&machine->util_data, srate, mclk); |
| if (err < 0) { |
| dev_err(card->dev, "Can't configure clocks\n"); |
| return err; |
| } |
| |
| err = snd_soc_dai_set_sysclk(codec_dai, RT5640_SCLK_S_MCLK, mclk, |
| SND_SOC_CLOCK_IN); |
| if (err < 0) { |
| dev_err(card->dev, "codec_dai clock not set\n"); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static struct snd_soc_ops tegra_rt5640_ops = { |
| .hw_params = tegra_rt5640_asoc_hw_params, |
| }; |
| |
| static struct snd_soc_jack tegra_rt5640_hp_jack; |
| |
| static struct snd_soc_jack_pin tegra_rt5640_hp_jack_pins[] = { |
| { |
| .pin = "Headphones", |
| .mask = SND_JACK_HEADPHONE, |
| }, |
| }; |
| |
| static struct snd_soc_jack_gpio tegra_rt5640_hp_jack_gpio = { |
| .name = "Headphone detection", |
| .report = SND_JACK_HEADPHONE, |
| .debounce_time = 150, |
| .invert = 1, |
| }; |
| |
| static const struct snd_soc_dapm_widget tegra_rt5640_dapm_widgets[] = { |
| SND_SOC_DAPM_HP("Headphones", NULL), |
| SND_SOC_DAPM_SPK("Speakers", NULL), |
| SND_SOC_DAPM_MIC("Mic Jack", NULL), |
| }; |
| |
| static const struct snd_kcontrol_new tegra_rt5640_controls[] = { |
| SOC_DAPM_PIN_SWITCH("Speakers"), |
| }; |
| |
| static int tegra_rt5640_asoc_init(struct snd_soc_pcm_runtime *rtd) |
| { |
| struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(rtd->card); |
| |
| snd_soc_card_jack_new(rtd->card, "Headphones", SND_JACK_HEADPHONE, |
| &tegra_rt5640_hp_jack, tegra_rt5640_hp_jack_pins, |
| ARRAY_SIZE(tegra_rt5640_hp_jack_pins)); |
| |
| if (gpio_is_valid(machine->gpio_hp_det)) { |
| tegra_rt5640_hp_jack_gpio.gpio = machine->gpio_hp_det; |
| tegra_rt5640_hp_jack_gpio.invert = |
| !!(machine->gpio_hp_det_flags & OF_GPIO_ACTIVE_LOW); |
| snd_soc_jack_add_gpios(&tegra_rt5640_hp_jack, |
| 1, |
| &tegra_rt5640_hp_jack_gpio); |
| } |
| |
| return 0; |
| } |
| |
| static int tegra_rt5640_card_remove(struct snd_soc_card *card) |
| { |
| struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card); |
| |
| if (gpio_is_valid(machine->gpio_hp_det)) { |
| snd_soc_jack_free_gpios(&tegra_rt5640_hp_jack, 1, |
| &tegra_rt5640_hp_jack_gpio); |
| } |
| |
| return 0; |
| } |
| |
| static struct snd_soc_dai_link tegra_rt5640_dai = { |
| .name = "RT5640", |
| .stream_name = "RT5640 PCM", |
| .codec_dai_name = "rt5640-aif1", |
| .init = tegra_rt5640_asoc_init, |
| .ops = &tegra_rt5640_ops, |
| .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | |
| SND_SOC_DAIFMT_CBS_CFS, |
| }; |
| |
| static struct snd_soc_card snd_soc_tegra_rt5640 = { |
| .name = "tegra-rt5640", |
| .owner = THIS_MODULE, |
| .remove = tegra_rt5640_card_remove, |
| .dai_link = &tegra_rt5640_dai, |
| .num_links = 1, |
| .controls = tegra_rt5640_controls, |
| .num_controls = ARRAY_SIZE(tegra_rt5640_controls), |
| .dapm_widgets = tegra_rt5640_dapm_widgets, |
| .num_dapm_widgets = ARRAY_SIZE(tegra_rt5640_dapm_widgets), |
| .fully_routed = true, |
| }; |
| |
| static int tegra_rt5640_probe(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| struct snd_soc_card *card = &snd_soc_tegra_rt5640; |
| struct tegra_rt5640 *machine; |
| int ret; |
| |
| machine = devm_kzalloc(&pdev->dev, |
| sizeof(struct tegra_rt5640), GFP_KERNEL); |
| if (!machine) { |
| dev_err(&pdev->dev, "Can't allocate tegra_rt5640\n"); |
| return -ENOMEM; |
| } |
| |
| card->dev = &pdev->dev; |
| platform_set_drvdata(pdev, card); |
| snd_soc_card_set_drvdata(card, machine); |
| |
| machine->gpio_hp_det = of_get_named_gpio_flags( |
| np, "nvidia,hp-det-gpios", 0, &machine->gpio_hp_det_flags); |
| if (machine->gpio_hp_det == -EPROBE_DEFER) |
| return -EPROBE_DEFER; |
| |
| ret = snd_soc_of_parse_card_name(card, "nvidia,model"); |
| if (ret) |
| goto err; |
| |
| ret = snd_soc_of_parse_audio_routing(card, "nvidia,audio-routing"); |
| if (ret) |
| goto err; |
| |
| tegra_rt5640_dai.codec_of_node = of_parse_phandle(np, |
| "nvidia,audio-codec", 0); |
| if (!tegra_rt5640_dai.codec_of_node) { |
| dev_err(&pdev->dev, |
| "Property 'nvidia,audio-codec' missing or invalid\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tegra_rt5640_dai.cpu_of_node = of_parse_phandle(np, |
| "nvidia,i2s-controller", 0); |
| if (!tegra_rt5640_dai.cpu_of_node) { |
| dev_err(&pdev->dev, |
| "Property 'nvidia,i2s-controller' missing or invalid\n"); |
| ret = -EINVAL; |
| goto err; |
| } |
| |
| tegra_rt5640_dai.platform_of_node = tegra_rt5640_dai.cpu_of_node; |
| |
| ret = tegra_asoc_utils_init(&machine->util_data, &pdev->dev); |
| if (ret) |
| goto err; |
| |
| ret = snd_soc_register_card(card); |
| if (ret) { |
| dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", |
| ret); |
| goto err_fini_utils; |
| } |
| |
| return 0; |
| |
| err_fini_utils: |
| tegra_asoc_utils_fini(&machine->util_data); |
| err: |
| return ret; |
| } |
| |
| static int tegra_rt5640_remove(struct platform_device *pdev) |
| { |
| struct snd_soc_card *card = platform_get_drvdata(pdev); |
| struct tegra_rt5640 *machine = snd_soc_card_get_drvdata(card); |
| |
| snd_soc_unregister_card(card); |
| |
| tegra_asoc_utils_fini(&machine->util_data); |
| |
| return 0; |
| } |
| |
| static const struct of_device_id tegra_rt5640_of_match[] = { |
| { .compatible = "nvidia,tegra-audio-rt5640", }, |
| {}, |
| }; |
| |
| static struct platform_driver tegra_rt5640_driver = { |
| .driver = { |
| .name = DRV_NAME, |
| .pm = &snd_soc_pm_ops, |
| .of_match_table = tegra_rt5640_of_match, |
| }, |
| .probe = tegra_rt5640_probe, |
| .remove = tegra_rt5640_remove, |
| }; |
| module_platform_driver(tegra_rt5640_driver); |
| |
| MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>"); |
| MODULE_DESCRIPTION("Tegra+RT5640 machine ASoC driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:" DRV_NAME); |
| MODULE_DEVICE_TABLE(of, tegra_rt5640_of_match); |